Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4519x 4519x 4519x 1x 1x 4517x 4517x 4517x 4517x 4517x 4517x 4517x 4517x 4517x 4517x 4519x 4517x 4517x 4517x 4517x 4517x 4517x 4517x 4519x 162x 162x 162x 2x 2x 162x 162x 78x 78x 78x 78x 162x 162x 7x 7x 7x 7x 7x 1x 1x 6x 6x 6x 162x 4516x 4516x 4516x 4516x 4516x 4516x 4516x 4516x 4516x 4516x 4516x 4516x | /** @import { Program } from 'estree' */
/** @import { AST, Directive } from '#compiler' */
/** @import { Parser } from '../index.js' */
import * as acorn from '../acorn.js';
import { regex_not_newline_characters } from '../../patterns.js';
import * as e from '../../../errors.js';
import * as w from '../../../warnings.js';
import { is_text_attribute } from '../../../utils/ast.js';
const regex_closing_script_tag = /<\/script\s*>/;
const regex_starts_with_closing_script_tag = /^<\/script\s*>/;
const RESERVED_ATTRIBUTES = ['server', 'client', 'worker', 'test', 'default'];
const ALLOWED_ATTRIBUTES = ['context', 'generics', 'lang', 'module'];
/**
* @param {Parser} parser
* @param {number} start
* @param {Array<AST.Attribute | AST.SpreadAttribute | Directive>} attributes
* @returns {AST.Script}
*/
export function read_script(parser, start, attributes) {
const script_start = parser.index;
const data = parser.read_until(regex_closing_script_tag);
if (parser.index >= parser.template.length) {
e.element_unclosed(parser.template.length, 'script');
}
const source =
parser.template.slice(0, script_start).replace(regex_not_newline_characters, ' ') + data;
parser.read(regex_starts_with_closing_script_tag);
/** @type {Program} */
let ast;
try {
ast = acorn.parse(source, parser.ts);
} catch (err) {
parser.acorn_error(err);
}
// TODO is this necessary?
ast.start = script_start;
/** @type {'default' | 'module'} */
let context = 'default';
for (const attribute of /** @type {AST.Attribute[]} */ (attributes)) {
if (RESERVED_ATTRIBUTES.includes(attribute.name)) {
e.script_reserved_attribute(attribute, attribute.name);
}
if (!ALLOWED_ATTRIBUTES.includes(attribute.name)) {
w.script_unknown_attribute(attribute);
}
if (attribute.name === 'module') {
if (attribute.value !== true) {
// Deliberately a generic code to future-proof for potential other attributes
e.script_invalid_attribute_value(attribute, attribute.name);
}
context = 'module';
}
if (attribute.name === 'context') {
if (attribute.value === true || !is_text_attribute(attribute)) {
e.script_invalid_context(attribute);
}
const value = attribute.value[0].data;
if (value !== 'module') {
e.script_invalid_context(attribute);
}
context = 'module';
}
}
return {
type: 'Script',
start,
end: parser.index,
context,
content: ast,
parent: null,
// @ts-ignore
attributes
};
}
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